Blar i Divisjon for miljø og naturressurser på forfatter "Økland, Tonje"

Viser treff 1-6 av 6

    • Boreal tree species change as a climate mitigation strategy: impact on ecosystem C and N stocks and soil nutrient levels 

      Kjønaas, O. Janne; Barcena, Teresa G.; Hylen, Gro; Nordbakken, Jørn-Frode; Økland, Tonje (Peer reviewed; Journal article, 2021-11-24)
      To increase the annual uptake of CO2 as well as the long-term storage of carbon (C) in forests, the Norwegian government consider large-scale replacements of native, deciduous forests with faster-growing species like Norway ...

    • Climate change drives substantial decline of understorey species richness and abundance in Norway spruce forests during 32 years of vegetation monitoring 

      Økland, Tonje; Halvorsen, Rune; Lange, Holger; Nordbakken, Jørn-Frode; Clarke, Nicholas (Peer reviewed; Journal article, 2023-05-31)
      Questions Observations in permanent forest vegetation plots in Norway and elsewhere indicate that complex changes have taken place over the period 1988–2020. These observations are summarised in the “climate-induced ...

    • Klimakur 2030 – beskrivelse av utvalgte klimatiltak knyttet til skog. Supplement. 

      Søgaard, Gunnhild; Alfredsen, Gry; Fernández, Clara Antón; Astrup, Rasmus Andreas; Belbo, Helmer; Clarke, Nicholas; Eriksen, Rune; Granhus, Aksel; Hanssen, Kjersti Holt; Hietala, Ari Mikko; Kockum, Frans; Mohr, Christian Wilhelm; Nordbakken, Jørn-Frode; Stokland, Jogeir Nicolai; Sverker, Jennie; Økland, Tonje (NIBIO rapport;6(153) 2020, Research report, 2020-11)
      Det årlige netto opptaket i skogen i Norge økte frem til 2009 (over 35 mill. tonn), og har etter det vist en avtakende trend. I 2018 var det et netto opptak på i underkant av 28 millioner tonn CO2- ekvivalenter. Størrelsen ...

    • Shift in tree species changes the belowground biota of boreal forests 

      Mundra, Sunil; Kauserud, Håvard; Økland, Tonje; Nordbakken, Jørn-Frode; Ransedokken, Yngvild Eidissen; Kjønaas, O. Janne (Peer reviewed; Journal article, 2022-03-20)
      The replacement of native birch with Norway spruce has been initiated in Norway to increase long-term carbon storage in forests. However, there is limited knowledge on the impacts that aboveground changes will have on the ...

    • Short-term effects of hardened wood ash and nitrogen fertilisation on understory vegetation in a Norway spruce forest in south-east Norway 

      Økland, Tonje; Nordbakken, Jørn-Frode; Clarke, Nicholas; Hanssen, Kjersti Holt (Peer reviewed; Journal article, 2022-07-26)
      In a fertiliser experiment in a Norway spruce forest in SE Norway, four treatments were applied in a block design with three replicates per treatment. Treatments included 3 t wood ash ha−1 (Ash), 150 kg nitrogen ha−1 (N), ...

    • Skogens helsetilstand i Norge. Resultater fra skogskadeovervåkingen i 2019 

      Timmermann, Volkmar; Andreassen, Kjell; Beachell, Andreas Myki; Børja, Isabella; Brurberg, May Bente; Clarke, Nicholas; Halvorsen, Rune; Hylen, Gro; Jepsen, Jane Uhd; Perminow, Juliana; Solberg, Sverre; Solheim, Halvor; Talgø, Venche; Tollefsrud, Mari Mette; Vindstad, Ole Petter Laksforsmo; Økland, Bjørn; Økland, Tonje; Aas, Wenche (NIBIO rapport;6(119) 2020, Research report, 2020-10)
      Skogens helsetilstand påvirkes i stor grad av klima og værforhold, enten direkte ved tørke, frost og vind, eller indirekte ved at klimaet påvirker omfanget av soppsykdommer og insektangrep. Klimaendringene og den forventede ...